我有一个OpenGL游戏,需要知道设备的方向(即纵向与横向)。
API 看起来非常简单...我的视图控制器的相关部分是:
@implementation MyViewController
- (id)init
{
...
// Get orientation events
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(didRotate:)
name:@"UIDeviceOrientationDidChangeNotification" object:nil];
...
}
-(void)didRotate:(NSNotification*)notification
{
NSLog(@"didRotate %d", orientation);
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
{
NSLog(@"shouldAutorotateToInterfaceOrientation %d", orientation);
return YES;
}
@end
发生的情况是我在启动期间接到一些电话:
shouldAutorotateToInterfaceOrientation 3
shouldAutorotateToInterfaceOrientation 3
shouldAutorotateToInterfaceOrientation 3
shouldAutorotateToInterfaceOrientation 3
didRotate 4
shouldAutorotateToInterfaceOrientation 4
shouldAutorotateToInterfaceOrientation 4
didRotate 1
shouldAutorotateToInterfaceOrientation 1
之后,UIView和EAGLContext被设置,它开始渲染,一切看起来都很棒,但是无论我在玩游戏时旋转手机多少,都应该永远不会再次调用AutorotateToInterfaceOrientation和didRotate。
我可能做错了什么才能发生这种情况?
好吧,这有点尴尬...
原来人像模式锁定已打开。
咚!